Cornflower

Red, gritty, watery eyes at the end of a long day of screen work or exposure to wind and dust, without discharge or pain

Puffy irritated eyelids in a patient with hay fever who wants a cooling compress alongside their other treatment

Delicate patient who wants a gentle, pleasant-tasting bitter before meals rather than a strong one

Overview. Centaurea cyanus is a slender annual of the daisy family with vivid blue flower heads, once a common weed of European grain fields and now grown mostly in gardens and for herbal and culinary use. The dried ray florets are the medicine, prized as much for their color as their gentle action. In European folk and phytotherapy tradition cornflower is a mild, cooling anti-inflammatory used above all for the eyes, and secondarily as a light bitter, a mouthwash, and a skin wash. It is a minor but pleasant remedy, a gentler cousin of eyebright.

Clinical Notes. Cornflower earns its place as the eye herb for people who find eyebright too drying or whose eyes are simply tired and irritated rather than infected. Make a fresh infusion, 1 to 2 g of florets in 150 mL freshly boiled water, steep covered for ten minutes, strain through a sterile filter or unbleached paper, cool, and apply as a compress on closed lids for ten minutes, or as an eyewash in a clean eyecup, once or twice daily.

Conservation. Once abundant as a cornfield weed, the wild plant has declined sharply in Western Europe with modern herbicide use; commercial supply is cultivated, so no wild-harvest concern applies.